摘要:
A method for the growth of a compound semiconductor comprises growing on a silicon substrate a polycrystalline layer of a desired Group III-V compound semiconductor or a crystal layer of the desired Group III-V compound semiconductor having inferior crystallinity, growing on the formed layer at least one layer of the same semiconductor as the desired Group III-V compound semiconductor and at least one layer of a Group III-V compound semiconductor having a lattice constant approximating the lattice constant of the desired Group III-V compound semiconductor, which layers are alternately disposed, and growing on the alternately disposed layers a layer of the desired Group III-V compound semiconductor.
摘要:
A method of forming an organic silica film includes forming a coating including a silicon compound having an —Si—O—Si— structure and an —Si—CH2—Si— structure on a substrate, heating the coating, and curing the coating by applying ultraviolet radiation.
摘要:
An outboard motor S has a first drive shaft 31 directly interlocked with an engine E, a second drive shaft 32, an intermediate gear mechanism 33 interlocking the first drive shaft 31 and the second drive shaft 32, an output gear mechanism 50 driven by power transmitted thereto through the second drive shaft 32, a propeller shaft 17 driven for rotation by power transmitted thereto through the output gear mechanism 50, and a gear case 13 holding the output gear mechanism 50. The second drive shaft 32 extends downward beyond a vertical position corresponding to the lower end of the first drive shaft 31. The gear case 13 is provided with water intakes 98 through which a water pump 90 sucks water in a space between the first drive shaft 31 and the output gear mechanism 50 with respect to a vertical direction on the front side of the second drive shaft 32. The space for the water intakes 98 can be easily secured because the second drive shaft 32 is disposed on the rear side of the first drive shaft 31.
摘要:
A process for producing a film forming composition, the process including hydrolyzing and condensing: (A) at least one silane compound selected from a compound (A-1) shown by the following general formula (1), a compound (A-2) shown by the following general formula (2), and a compound (A-3) shown by the following general formula (3), RaSi(OR1)4-a (1) Si(OR2)4 (2) R3b(R4O)3-bSi—(R7)d—Si(OR5)3-cR6c (3); and (B) a cyclic silane compound shown by the following general formula (4):
摘要:
An outboard motor S has: a first drive shaft 31 interlocked with an internal combustion engine, a second drive shaft 32 interlocked with the first drive gear 31, an output gear mechanism 50 driven by the second drive shaft 32, a propeller shaft 17, and a gear case 13 holding the output gear mechanism 50 and the propeller shaft 17 and having a normally submerged gearing holding portion 21. The second drive shaft 32 is disposed rearward of the first drive shaft 31 with respect to a longitudinal direction. The gearing holding portion 21 has a tapered part 21a extending forward from a position corresponding to the second drive shaft 32 and having a front end 21c. The tapered part 21a is tapered toward the front. The disposition of the second drive shaft 32 rearward of the first drive shaft 31 enables forming the gear case 13 in a small size and reduces underwater resistance to the gear case 13.
摘要:
A method of forming a silica-based film includes:applying a composition for forming an insulating film for a semiconductor device, which is cured by using heat and ultraviolet radiation, to a substrate to form a coating; heating the coating; and applying heat and ultraviolet radiation to the coating to effect a curing treatment. The composition includes: a hydrolysis-condensation product produced by hydrolysis and condensation of at least one silane compound selected from the group consisting of compounds shown by the following general formula (A), and at least one silane compound selected from the group consisting of compounds shown by the following general formula (B) and compounds shown by the following general formula (C); and an organic solvent,
摘要:
A method of producing a polymer includes hydrolyzing and condensing a hydrolyzable-group-containing silane monomer (B) in the presence of one or more polycarbosilanes (A), at least one of the polycarbosilanes (A) being a polycarbosilane (I) having a weight average molecular weight of 500 or more and obtained by reacting a compound of the following general formula (1) in the presence of at least one of an alkali metal and an alkaline earth metal, R1mY3-mSiCR2nX3-n (1) wherein R1 and R2 individually represent a monovalent organic group or a hydrogen atom, X represents a halogen atom, Y represents a halogen atom or an alkoxy group, and m and n individually represent integers from 0 to 2.
摘要:
A method for producing a polymer includes hydrolyzing and condensing (B) a hydrolyzable-group-containing silane monomer in the presence of (A) a polycarbosilane, the polycarbosilane (A) being a polymer (I) obtained by reacting (a) a compound shown by the following general formula (1) and (b) at least one compound selected from the group consisting of a compound shown by the following general formula (2) and a compound shown by the following general formula (3) in an organic solvent in the presence of at least one of an alkali metal and an alkaline earth metal, R1kCX4-k (1) R2kSiY4-k (2) R3mY3-mSiCR4nX3-n (3) wherein R1 to R4 individually represent a monovalent organic group or a hydrogen atom, X represents a halogen atom, Y represents a halogen atom or an alkoxy group, k represents an integer from 0 to 3, and m and n individually represent integers from 0 to 2.
摘要翻译:制备聚合物的方法包括在(A)聚碳硅烷存在下水解和缩合(B)含可水解基团的硅烷单体,所述聚碳硅烷(A)是通过使(a)化合物 由下述通式(1)和(b)表示的有机溶剂中的至少一种选自下述通式(2)表示的化合物和下述通式(3)所示的化合物的化合物 在碱金属和碱土金属中的至少一种的存在下,<?in-line-formula description =“In-line formula”end =“lead”?> R&lt; SUB (1)<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“在线公式”end =“lead”?> R 2> 2 u>(3) -formulae description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In-line Formulas”end =“lead”?> R <3> SUP> m 3-m SiCR 4 i> N 3-n(3)<?in-line-formula description =“ 其中R 1至R 4各自独立地表示一价有机基团或氢原子,X表示卤素原子,Y 表示卤素原子或烷氧基,k表示0〜3的整数,m和n分别表示0〜2的整数。
摘要:
A method of producing a polycarbosilane includes reacting (A) a polycarbosilane having a silicon-hydrogen bond and (B) a compound having a carbon-carbon multiple bond to which a silicon-hydrogen bond may be added.
摘要:
A polycarbosilane, having a main chain in which silicon atoms and carbon atoms are alternately repeated, includes a repeating unit shown by a following general formula (1), a repeating unit shown by a following general formula (2), and a repeating unit shown by a following general formula (3).